darkcomet | a8929b3d5c5a904027ada86379a74de93eb61eaee734eee53848220c8c220b69

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
07/02/2025, 06:12

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General

Target

JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe
Size

1.6MB
MD5

b3df1761ad3b759e0759516bbcfc27c5
SHA1

ba9af5d9c407c527cc568421300302be09ebfdbe
SHA256

a8929b3d5c5a904027ada86379a74de93eb61eaee734eee53848220c8c220b69
SHA512

5ee8d97cd3a977f5bfc7c59b1199e1e8025a22e260328acd124d4dbd0b820a54332ef53a248fb9fe9139902fa57a2b43f28570dcbe4c347a99815150d028c2be
SSDEEP

49152:jhjcapo0JfYDSGvOsUhjcapo0JfYDSGvOs:V9lfYDSYW9lfYDSY

Score

10^/10

darkcomet discovery rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe

Executes dropped EXE 1 IoCs

pid	Process
4344	rzFumz.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4344 set thread context of 5040	4344	rzFumz.exe	88
PID 3100 set thread context of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3564 set thread context of 4060	3564	vbc.exe	90

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rzFumz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4344	rzFumz.exe
Token: SeSecurityPrivilege	4344	rzFumz.exe
Token: SeTakeOwnershipPrivilege	4344	rzFumz.exe
Token: SeLoadDriverPrivilege	4344	rzFumz.exe
Token: SeSystemProfilePrivilege	4344	rzFumz.exe
Token: SeSystemtimePrivilege	4344	rzFumz.exe
Token: SeProfSingleProcessPrivilege	4344	rzFumz.exe
Token: SeIncBasePriorityPrivilege	4344	rzFumz.exe
Token: SeCreatePagefilePrivilege	4344	rzFumz.exe
Token: SeBackupPrivilege	4344	rzFumz.exe
Token: SeRestorePrivilege	4344	rzFumz.exe
Token: SeShutdownPrivilege	4344	rzFumz.exe
Token: SeDebugPrivilege	4344	rzFumz.exe
Token: SeSystemEnvironmentPrivilege	4344	rzFumz.exe
Token: SeChangeNotifyPrivilege	4344	rzFumz.exe
Token: SeRemoteShutdownPrivilege	4344	rzFumz.exe
Token: SeUndockPrivilege	4344	rzFumz.exe
Token: SeManageVolumePrivilege	4344	rzFumz.exe
Token: SeImpersonatePrivilege	4344	rzFumz.exe
Token: SeCreateGlobalPrivilege	4344	rzFumz.exe
Token: 33	4344	rzFumz.exe
Token: 34	4344	rzFumz.exe
Token: 35	4344	rzFumz.exe
Token: 36	4344	rzFumz.exe
Token: SeIncreaseQuotaPrivilege	5040	iexplore.exe
Token: SeSecurityPrivilege	5040	iexplore.exe
Token: SeTakeOwnershipPrivilege	5040	iexplore.exe
Token: SeLoadDriverPrivilege	5040	iexplore.exe
Token: SeSystemProfilePrivilege	5040	iexplore.exe
Token: SeSystemtimePrivilege	5040	iexplore.exe
Token: SeProfSingleProcessPrivilege	5040	iexplore.exe
Token: SeIncBasePriorityPrivilege	5040	iexplore.exe
Token: SeCreatePagefilePrivilege	5040	iexplore.exe
Token: SeBackupPrivilege	5040	iexplore.exe
Token: SeRestorePrivilege	5040	iexplore.exe
Token: SeShutdownPrivilege	5040	iexplore.exe
Token: SeDebugPrivilege	5040	iexplore.exe
Token: SeSystemEnvironmentPrivilege	5040	iexplore.exe
Token: SeChangeNotifyPrivilege	5040	iexplore.exe
Token: SeRemoteShutdownPrivilege	5040	iexplore.exe
Token: SeUndockPrivilege	5040	iexplore.exe
Token: SeManageVolumePrivilege	5040	iexplore.exe
Token: SeImpersonatePrivilege	5040	iexplore.exe
Token: SeCreateGlobalPrivilege	5040	iexplore.exe
Token: 33	5040	iexplore.exe
Token: 34	5040	iexplore.exe
Token: 35	5040	iexplore.exe
Token: 36	5040	iexplore.exe
Token: SeIncreaseQuotaPrivilege	3564	vbc.exe
Token: SeSecurityPrivilege	3564	vbc.exe
Token: SeTakeOwnershipPrivilege	3564	vbc.exe
Token: SeLoadDriverPrivilege	3564	vbc.exe
Token: SeSystemProfilePrivilege	3564	vbc.exe
Token: SeSystemtimePrivilege	3564	vbc.exe
Token: SeProfSingleProcessPrivilege	3564	vbc.exe
Token: SeIncBasePriorityPrivilege	3564	vbc.exe
Token: SeCreatePagefilePrivilege	3564	vbc.exe
Token: SeBackupPrivilege	3564	vbc.exe
Token: SeRestorePrivilege	3564	vbc.exe
Token: SeShutdownPrivilege	3564	vbc.exe
Token: SeDebugPrivilege	3564	vbc.exe
Token: SeSystemEnvironmentPrivilege	3564	vbc.exe
Token: SeChangeNotifyPrivilege	3564	vbc.exe
Token: SeRemoteShutdownPrivilege	3564	vbc.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3100 wrote to memory of 4344	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	87
PID 3100 wrote to memory of 4344	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	87
PID 3100 wrote to memory of 4344	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	87
PID 4344 wrote to memory of 5040	4344	rzFumz.exe	88
PID 4344 wrote to memory of 5040	4344	rzFumz.exe	88
PID 4344 wrote to memory of 5040	4344	rzFumz.exe	88
PID 4344 wrote to memory of 5040	4344	rzFumz.exe	88
PID 4344 wrote to memory of 5040	4344	rzFumz.exe	88
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3100 wrote to memory of 3564	3100	JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe	89
PID 3564 wrote to memory of 4060	3564	vbc.exe	90
PID 3564 wrote to memory of 4060	3564	vbc.exe	90
PID 3564 wrote to memory of 4060	3564	vbc.exe	90
PID 3564 wrote to memory of 4060	3564	vbc.exe	90
PID 3564 wrote to memory of 4060	3564	vbc.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b3df1761ad3b759e0759516bbcfc27c5.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3100
- C:\Users\Admin\AppData\Local\Temp\rzFumz.exe
  "C:\Users\Admin\AppData\Local\Temp\rzFumz.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4344
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:5040
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3564
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:4060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\rzFumz.exe

Filesize
820KB

MD5
4e60c5b5b0e6de2d865a90abc56a6543

SHA1
e3481866659a68e9e4821943093003ca87ed9713

SHA256
78c3e8fd1b03bdbdc661f0c2312f034ffbf992d578aff817b77100af2e23f052

SHA512
b86d983ee65c84b34711d9be09a1b2a5de48d61442de4c54c6f0ef3dced2abb3930cad912ce86619f9095445f583fb8d51e50ffdf28e6ddae39108c395d6b05e

Download Submit
memory/3100-0-0x0000000074AE2000-0x0000000074AE3000-memory.dmp

Filesize
4KB

Download
memory/3100-1-0x0000000074AE0000-0x0000000075091000-memory.dmp

Filesize
5.7MB

Download
memory/3100-2-0x0000000074AE0000-0x0000000075091000-memory.dmp

Filesize
5.7MB

Download
memory/3100-25-0x0000000074AE0000-0x0000000075091000-memory.dmp

Filesize
5.7MB

Download
memory/3564-18-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/3564-19-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/3564-21-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/3564-24-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/3564-22-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/4060-23-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download
memory/4344-16-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/4344-14-0x0000000002180000-0x0000000002181000-memory.dmp

Filesize
4KB

Download
memory/5040-15-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download